水热法合成纳米氧化锆团聚机理研究  

Study on the Agglomeration Mechanism of Nano-sized YSZ Synthesized with Hydrothermal Method

作　　者：祝宝军[1] 陶颖[2] 张婷婷[1] 丁莹[1] 

机构地区：[1]湖南大学材料科学与工程学院,湖南长沙410082 [2]中南大学材料科学与工程学院,湖南长沙410083

出　　处：《稀有金属与硬质合金》2008年第3期1-5,共5页Rare Metals and Cemented Carbides

基　　金：国家自然科学基金资助项目(50602051);中国博士后科学基金(20070410987);湖南省博士后科学基金(2006FJ4237)

摘　　要：采用ZrOCl2.8H2O、Y(NO3)3和氨水为起始原料制备水热前驱物,以矿化剂溶液作为水热介质,通过水热法合成氧化钇稳定氧化锆(YSZ)纳米粉末。运用XRD、SEM等测试手段对YSZ粉末的性能进行表征和分析。研究了水热处理工艺、矿化剂的种类及浓度、有机表面活性剂对水热合成过程中粉末团聚现象的影响,并提出了相应的解决方法。Nano-sized powders were synthesized by hydrothermal method using ZrOCl4 ·8H20, Y（NO3）3 and ammonia as hydrotheraml precursor raw materials and water/mineralizer solutions as hydrothermal medium. The phase constitution and physical properties of YSZ powders were tested by the X-ray diffraction, scanning electron microscope and so on. The effects of hydrothermal process, the types and concentration of mineralizers,and organic surface activator on the agglomeration of nano-sized YSZ powders were in vestigated and some solutions were suggested accordingly.

关 键 词：YSZ 纳米粉末 水热法 团聚 

分 类 号：TF123.72[冶金工程—粉末冶金]